On Mon, Apr 12, 2010 at 12:55:28PM +0200, Jens Rehsack wrote: > > So I did last days when I played around with threads and > Log::Log4perl::Appender::DBI. I've seen, than (even if in my simply > example everything works fine), a cloned DBD::File still uses the same > file handles for reading/writing. > I talked with Merijn about this situation in #dbi on irc.perl.org and > we decided, that it would be better, to croak an error when a $dbh is > used in another thread than the owning one. > > So I started with some hacking this morning to implement that and did
How? Via a CLONE method? > 'make test' on DBI (as teached by Merijn). > I got errors from DBD::DBM and after a short analyze I've seen, that > it derives from DBD::File, but doesn't inherit the entire behavior, > just a subset. > This caused DBD::DBM::db::prepare to fail in my tests. > > Now I'm unsure how to step forward. I can hack DBD::File to handle > those incomplete inheritance by ignoring them, or I can fix DBD::DBM > to full inherit and modify the behavior it needs to change (instead of > ignoring parent's methods). > I would prefer the second way, because I think it's the cleaner one. It sounds good (but you've not really given enough background information for someone who's forgotten all he ever knew about DBD::File & DBD::DBM, like me). Tim.
